题型:选择题 下列命题正确的是[ ]A.菱形的面积等于两条对角线乘积的一半 B.一组对边平行,另一组对边相等的四边形是等腰梯形 C.一个多边形的内角相等,则它的边一定都相等 D.矩形的对角线一定互相垂直 查看答案
题型:选择题 — Are you waiting for a bus from Medical University? — Yes. I arrived here at the bus stop ten minutes ago, but the bus _____.A. hadn't come B. won't come C. didn't come D. hasn't come 查看答案